US1288728A

US1288728A - Rotary blower.

Info

Publication number: US1288728A
Application number: US5141715A
Authority: US
Inventors: Ira H Spencer
Original assignee: Spencer Turbine Co
Current assignee: Spencer Turbine Co
Priority date: 1915-09-18
Filing date: 1915-09-18
Publication date: 1918-12-24
Anticipated expiration: 1935-12-24

Description

i. H. SPENCER.

ROTARY BLOWER. v APPLICATION FILED SEPT.18. i815.

1,988,728.- Patented 1M. 3- 1915.

2 SHEETS-SHEET I j r is WITNESSES.-

/ ;M;/M M mam I IN VE N TOR .7

TOR NE Y.

I. H. SPENCER.

ROTARY BLOWER.

APPLICATION FILED SEPT. I8, 1915 1 ,288 Patented Dec; 24, 1918.

2 SHEETS-SHEET 2 wINEssEs- 11v VENTO'R.

rcfmwm mamas.

nnrrnn amiss rarrnnr OFFICE.

IRA H. SPENCER, OF WEST HARTFORD, CONNECTICUT. ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE SPENCER TURBINE COMPANY, A CORPORATION OF CONNECTICUT.

ROTARY BLOWER.

mon shaft, and anobject of my invention,.

among others. is the production of a blower that shall be extremely strong in'its construction and able to withstand the strains incident to high peripheral speeds.

One form of device embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in which Figure 1 is a view in side elevation of a blower ei-nbodying my'invention, the structure being partially broken away in centra vertical section to show construction.

Fig. 2 is a face view of one of the blower sections looking in the direction of the arrow shown in Fig. 3.

Fig. 3 is a detail view, scale enlarged, of a portion of the shell and of one of the blower sections, the latter being partially cut away in central section to show construction. and a portion of the section being broken out.

My ihvention is of particular value in connection with fans ,for effecting changes in air pressures for different purposes, it being my intention to provide. a structure with which the desired results may be attained by rotating the fans at a minimum speed as compared with the peripheral speed thereof, that is, the fans being made large in diameter to produce the required peripheral speed and the construction being such that they will readily withstand the strains incident to this high peripheral speed.

The term blower has been used herein be muse it is a name commonly given to devices of this class, nevertheless the invention will be understood to exist in a structure whether it be used to raise pressures for certain purposes or to reduce them.

In the accompanying drawings the numorals 5 and 6 indicate the sections of a blower shell or case, that is composed of sheet metal, round in cross section, and supported in any suitable manner, as upon cross Specification of Letters Patent.

Patented Dec. 24, 1918.

Application filed September 18, 1915 Serial No. 51,417.

pieces 7. Rings it closely tit the, outer surface of the main section '5 of the shell at each end thereof and are secured thereto in any suitable manner, as shown herein, these rings being of L-shape in cross section with bolts extending through the flanges and through end plates 910 to secure them in place. A second ring is employed surrounding the meeting ends of the main and motor sections 5 and 6, respectively, of the shell, the two rings at this point being bolted together to clamp the end plate 10 between them. The end plates 9 and 10 are each provided with a lip 36 of a depth to 'inclose one of the surrounding rings and also inclose a gasket to be hereinafter described. An inlet port 11 and an exhaust port 12 are formed through the plates 9 and 10 respectively, and a motor 13 is supported in any suitable manner in the motor section (3 of the shell. Gaskets 14 are clamped between the end plates and rings, as shown in Fig. l of the drawings, to prevent leaking at these joints.

The parts directly inclosing the fans and constituting the air passages are made up in sections closely fitting the interior of the shell, as well as each other. Each section includes a division plate 15, a diffusion plate l( 5, diffusion vanes 17 and spacers 18. Each division plate 15 has a flange comprising an offset part 1.9 closely fitting the interior of the shell 5 and a reduced part 20 of lesser diameter than the offset part to create a packing space 21 between the periphery of the reduced part and the inner wall of the shell. Each of the spacers 18, of ring shape, has one edge secured, as by welding, to one face of a division plate 15, the outer surfaces of said ring resting against the inner surface of the wall formed by the reduced part 20 of the flange of said division plate, this constituting a particularly efficient means for securing a strong joint. The opposite edge of each spacer is provided with an inturned lip 22 that rests against the outer face of a division plate in the next and adjacent section. Each diffusion plate 16 is smaller in diameter than the interior diameter of the spacers 18 to provide a passage 'for air around the edge of each of said plates, and a lip 23 is formed on the outer edge of each diflusion plate and against which the outer ends of the diffusion vanes 17 abut. These diffusion vanes are of curved form and they are disposed as shown in Fig. 2 of the drawlugs, which is a construction common to blowers of this type.

In order topreserve the peripheral speed of the fans and yet rotate them at a slower speed, tllB'Cllflll'lGtQl oi the fans and hence of the entire structure, must be increased to compensate for the slower rotation, the dia- .liXlCtll. dimensions depending upon the lttle'Oli rotation, that is, the slower the rate of rotation the greater the diameter of the fans and shell. j

In order to secure lightness in construction and hence reduce the power required f for operation as well as to simplify the construction, it is desirable that the structure shall be of sheet metal, but a structure composed of sheet metal shaped as in structures heretofore employed, when" exceeding certain dimensions, becomes so flexible and unstable as to be practically inoperative. It

\ is to overcome these objections and to enable the use of an extremely large sheet metal structure, the fans of which can be rotated at the desired high rate of speed, that I have invented the improved blower forming the subject matter of this applica tion.

In order to obtain this rigidity of struc/ ture I indent or dish both the division and diffusion plates as denoted by the numerals 2d and 25, each pair of said plates located near each other being dished in opposite directions and the dish shaped portions being substantially of the same diameter. This provides an extremely still and rigid structure sullicient to successfully withstand any liability to twist or weave in the operation of: the device and this rigidity is in creased by the construction of the flanges with oifset and reduced parts on. the division plates and the lips on the outer edges of thespacers, diliusion and end plates, it being observed that these strengthening features in each instance serve a plurality of purposes, as follows:

T he dishing of the division and diffusion plates as described provides a space ofindishing of the'plates above described also rovides fan chambers 28 between-the divisionand ditl'usion plates within which The offset parts of tansfll) are located. t e flanges at the peripher at the division ates provides a space for paclnngs'SQ as 11 stiilening feature for said The lipsl23 on the edges of the spacers provide; a substantial surface to receive the l plates resting against them and the lips 36 ,at the periphery of the plates serve t0 ,inclose the rings and gaskets as well as to stiller; this plate.

Rivets 27 are passed through the division and ditl'uswn plates at proper intervals to secure the parts firmly together. The fans are secured to a shaft 30 mounted in any suitable niai' ner within the shell, said shaft being secured to the motor shaft at one end and having a bearing in a housing 31 of any suitable construction and secured to the end plate 9. Each of the end plates 9 and is also of dish shaped construction as shown. in Fig. l. of the drawings, to increase the rigidity of the structure, and as a further means of securing this result the open ings atthe center of these end plates and through which the shaft extends are closed by dish shaped plates 33 and iii pret erably of a little thicker metal than the sheet netal comprising the structure as a whole. In order to strengthen the case at this point, a spider construction en'ibodying the plates 33 and 3% is employed, this construction constituting rin s 35 resting against theinner end plates that occupy the same position in the end sections as do the division plates in the other sections and supported by posts or struts 37, preferably integral with the rings and with rims 38 of the closingplates; The construction secures e2;- treine rigidity at the end of the case and the dish shaped inner and outer end plates provide the inlet and exhaust chambers and 10 between. each pair oi said plates.

Heretofore in the operation of blowers of this class, heat, due to the frictional resist ance to flow thnough the case, and also to to keep the temperature reduced by making use of the spaces between the blower sections and shell or case to contain a circulat ing and cooling medium as water. The joints between the inturnrd lips and the abutting division plates are made water tight, as are also theother joints between the parts 19 and 2.0 of the flanges on the division plates and the case and spacers re spectively; Circulating pipts ll and 42 are located preferably on diaini tricall y opposite sides ofthe case with branches l3 extending into each of the water chambers l-lyand stop-eocks or valves d5 are provided for each ofthe chambers to regulate the how of water. In the construction shown herein, radiator 46 is suitably connected with the pipes 4:1 and 42, and a supply pipe 4?" is connected with the cooling systen'i and has a valve 48 that controls the delivery of the water to the system. A waste pipe 49 tends from the tail end of the system and contains a waste valve'fi. By closing the valves 48 and 50 the water or cooling medium may be circulated over' and over through the system. and it may be renlen-- oppositely positioned and secured together,

ished whenever desired as by opening the valves 48 and 5.0, and by keeping these valves open fresh water may be circulated through the system, in this event the valve 51 betweenthe pipe 42 and radiator-being closed.

The heating of the shell is greater near the exhaust end of the case than at the inlet end, and the valves 45 may be used to regulate the flow to meet this condition, a greater amount of water being permitted to flow through the chhmber at the exhaust end than at the, inlet end of the shell, but various arrangements of the pipes and mlvesmay be employed, and the entire con 'struction may be varied to a greater or lesser degree and yet be within the spirit and in tent of the invention, and I do not, therefore, limit my ini'ention to the exact con structionherein shown and described.

I claim- 1'. A blower section con'iprisingtwo plates diffusion vanes secured between said plates, a spacer secured to one of said plates and surrounding the other plate at a distance from its edge, said members comprising an integral structure, a shaft extending through the center of said section, and fans secured to saidshaft.

2, A blower section comprising two plates oppositely positioned and secured together, difi'usion vanes secured between said plates,

a spacer secured to one of said plates and surrounding the other plate at a distance from its edge, said parts comprising an intcgral structure, a shell surrounding and in closing said sections, a shaft extending through the center of the structure, and fans secured to said shaft,

3. A plural number of blower sections each comprising two plates oppositely positioned and secured together, diliusion vanes secured between the plates in each section, a spacer secured to one, of the plates in each section and surrounding the other plate thereof at adistance from its edge, a shell surrounding and inclosing said sections, a shaft extendingthrough the center of said structure, and fans secured to said shaft.

4. A blower; comprising a sectional shell, 1 a plate extending across the interior of the shell and located between the meeting edges of the sections, rings surrounding the shell at the meeting edges of the sections, and fastening means projecting through the rings and plate to secure them together.

A blower comprising a sectional shell, a plate extending-across the interior of the shell and located between the meeting edges of the sections, rings surrounding the shell at the meeting edges of the sections, a gas ket located between the rings and against said plate, and means projecting through the rings, and plates to secure them together.

(3. A blower comprising a sectional shell,

. a plate extending across the interior of the shell to constitute an end wall of a section thereof, said plate being located between the meeting edges of the sections, a plate located within the shell and against the first mentioned plate, a gasket located against the first mentioned plate, rings surrounding the shell at the meeting edges of the sections and located. upon opposite sides of the first.

mentioned plate and gasket, and means projecting through. said rings and plate to secure the parts together.

7, A, blower comprising a sectional shell, a plate extending across the interior of the shell and located between the meeting edges "of the sections, said plate having a periphof the sections, said plate having a periphoral lip, a ring surrounding one section of the shelladjacent to said meeting edges; within the boundary of said lip, and means projecting through the ring and plate' to secure them together. i I

I 9. A blower comprising a sectional shell, a plate extending across the interior of the shell and located between the meeting edges of the sections, said plate having a'peripherai lip, a gasket located within and surrounded by said lip, rings surrounding the meeting edges of the sections, one of said rings being bounded by saidlip, and means projecting through the rings and plate to secure them together.

10. A blower including a shell, a blower scctionlocated within the shell and inch a plate having a peripheral flange comprising two parts, one of which, the outer, enlarged offset part fits the inner surface of the shell, said plate forming one wall of a fan chamber, a /fan located Within said chamber, and a shaft to which said fan is secured.

11. A blower including a shell, ablower sect-ion located within the shell and including a plate having a peripheral flange with an enlarged ofisct portion fitting the inner surface of the shell and creating a space between said flange and Shell, a fluid packing located within said. space, said plate formthe shell and a dish shaped portion near ,the center thereof constituting one wall of a fan chamber, a fan located within said chamber, and a shaft to which said fan is secured.

13. A blower includin a shell, plates disposed in pairs, each mem r of a pair forming one wall of a fan chamber, a spacer appurtenant to each pair of plates and having a lip resting against a plate of one of said pairs of plates, :1 fan located within said chamber, and a shaftto which said fan is secured.

14. A blower including a shell, a number of blower sections of similar construction-located within the shell, each section including two plates, each of which plates forms one wall of a fanchamber, a spacer having a lip resting against aplate of one of said sections, a fan located within the fan chamber,

and a shaft to which said fan is secured.

15) A blower including a shell, a number of blower sections of similar construction located within the shell, each section including two plates ififih of which plates forms one wall of a fan chamber, a spacer appurtenant to one of said plates and having an inturned lip resting against a plate .of one of said sectlons, a fan located within the fan'chamber, and ashal't to which said fan is secured.

16. A blower including'a shell, a number of plates located within said shell and including a pair of plates each of which forms one wall of a fan chamber, a spacer'appurtenant to one'of said platcsand secured in -contact therewith, said spacer being posi tioned to rest against another plate'of similar construction to one of said pair of plates. a fan located within the fan chamber, and a shaft to which said fan is secured.

17. A blower including a shell, a blower section located within the shell and including aplate having a peripheral flange with an enlarged ofiset portion fitting the inner surface of the. shell, a diffusion plate secured to the first mentioned plate and hav ing a peripheral lip, diffusion vanes secured between said plates and abutting againt saidv lip. one of said plates formin one wall'of a fan chamber, a fan located within said chamber, and a shaft to which said fan is secured.

18. A blower including a shell, a blower section located within the shell and including a plate having a peripheral flange with an enlarged offset portion fitting the inner surface of the shell and its central portion being dished, a diffusion plate secured to the first mentioned plate and having its central portion dished, said diffusion plate having a peripheral flange -diiiusion vanes located between said plates and with their edges lengthwise thereof shaped to fit the surfaces of said plates, one ofsaid plates forming a wall of a fan chamber, a fan located within said chamber, and a shaft to which said fan is secured. I v

19. A blower including a shell, a blower section located within the shell and including a. ilate having a peripheral flange, with an en arged ofi'set portion fitting the inner surface of the shell, a spacer having one edge secured within the snialler said flange and with its opposite. e ge shaped into .a 1i to rest against an opposing surface, a ifiusion plate, diffusion-vanes secured between said plates, one of which plates forms one wall of a fan chamber, a fan located within said chamber, and .a shaft to which said fan is secured.

20. A blower including a shell, a blower section located within the shell and includmg a plate having a peripheral flange with an enlarged ofiset portion fittin the inner surface of the shell, a spacer iaving one edge secured within the smaller part of said flange and with its outer edge having a lip to rest against an opposing surface. a diffusion plate --having a peripheral lip, diffusion vanes having their edges formed to fit the facing surfaces of said plates, and the ortlon of.

ends of said vanes abutting against said lips and one of said plates'forming a wall of a fan chamber, a fan locatcdwithin said chamber, and a shaft to" which said fan is secured. a

21. A blower including a shell, a blower section located within the shell and including a plate having a peripheral flange with an enlarged offset )ortion fitting the inner surface of the shell, a spacer having one edge secured within the smaller portion of said flange and its opposite end having a lip to rest against'an opposing surface, a

diffusion plate having a peripherallip, each of said plates being dished at their central V them, one of said plates being dished to increase its rigidity, struts supporting the thrust of said plates one against the other, a shaft extending lengthwise within the shell, and fans secured to said shaft.

23. A blower including a shell, an end plate extending across the shell, said plate being dished to increase its rigidity, an inner plate spaced from said and plate within the.

shell to form. a circulating chamber between them, struts supporting the thrust of said iao asso sis shaft extending lengthwise within the shell,

and a fan secured to said shaft.

A blower inc-hiding a shell. an end plate extending across the shell at one end thereof, an inner plate spaced from said end plate within the shell to form a circulating chamber between them, both of said plates being dished to increase their rigidity, struts supporting lhe thrust of said plates one against the other. a shaft extending lengthwise within the shell, and-a fan secured to said shaft.

26. A blower including a shell. an end plate extending across the shell. an inner plate having an opening at its center and spaced within the shell from said end plate to form a circulatingchamber between them. one of said plates being dished to increase il's rigidity, a ring surrounding said central opening, struts extending between said ring and end plate and supporting" the thrust. of one against the other. a shaft extending, lengthwise within the shelh and fans secured to said shaft.

27. L\. blower including a. shell. an end plate extending across the shell and having a central opening. an inner plate having an opening at its center and spaced within the shell from said end plate to form a circulatinn chamber between them. one of said plates being dished to increase its rigidity. a plateolosing the central opening in the end plate. struts extending; from said end plate and ljllIUStlflQflgIfllllSt the inner "plate :uljaront to its central opening. a shaft extending lengthwise Within the shell. and

fan secured to said shaft.

28. It blower including a shell, an end plate extending across the shell and having a. central opening, an inner plate having a central opening and spaced within the shell from said end. plate to form a circulating chamber between them, one 01 said "plates being dished to increase its rigidity, a plate closing the central opening in the end plate, a ring surrounding the opening through the inner plate. struts extending between said. plates to support tie 'llllI'llSll of one against the other, a shaft extending lengthwise Wil'hin the shell, and. a. tan secured to said. shaft.

29. A. nninher of blower sections, of similar construction and ea including twoplates oppositely positions. and sec 'ired to gctlicr. diffusion vanes FOCR'UGiil between said plates. a spacer secured to one of said plates and surrounding the other plate at a dis lance 'from its edge, said members comprising an integral structure. a shaft extending through the center of the sections. and fans secured. to said shaft.

30. A'hlo'wer including a shell. plates an ranged in sections extending lengthwise of the shell, said sections each including a. pair of plates each plate of which forms one wall. of a :tan chamber, spacers located upon opposit-e sides oi one of said plates. a fan lorated within 'tlie chamber, was shaft to which said fan secured.

31. .l blower inclnding shell. :i-n'umher of plates arranged in s ctions disposed lengthwise of and within the shell. each section in-- eluding: a pair of plates each of which plates forms a portion ol a fan chamber, one of salt. plates being larger in diameter than the other. a spacer located on one side of said larger plate. and another spacer having a lip resting; against the opposite side of said larger plate.

3:2. A blower including a shell. s number ol sections spaced apart Within and lengthwise ol' the shell. each setion comprising; two plates oppositely disposed and each forming a portion of a tan chamber. one be ing: largcrin diameter than the other and the other having a. lip at its periphery. dilit'nsion nines secured between said plates and within the boundary of said lip. and a spacer inclosing said smaller plate and with its intnrncd edge resting; against. the surface ofl'lie larger plate of an adjacent section. a shaft extending: through the center of the shell. and fans secured to said shaft.

IRA. H. SPENGER.

iii?

ill